Table 3 Breast cancer characteristics of study population, N = 4926
No. of women | Percentage | |
|---|---|---|
Estrogen/Progesterone receptors Status | ||
positive / positive | 2321 | 47.1 |
positive / negative | 770 | 15.6 |
negative / positive | 161 | 3.2 |
negative / negative | 636 | 12.9 |
missing | 1038 | 21.1 |
Grade | ||
well differentiated | 650 | 13.2 |
moderately differentiated | 1517 | 30.8 |
poorly differentiated | 1965 | 39.9 |
missing | 794 | 16.1 |
Tumor size | ||
< 2 cm | 3694 | 74.0 |
≥ 2 cm | 956 | 18.5 |
missing | 276 | 5.6 |
Axillary nodal involvement | ||
no | 3233 | 65.6 |
yes | 1378 | 27.9 |
missing | 315 | 6.4 |
Year of diagnosis | ||
1990–1994 | 1010 | 20.5 |
1995–1999 | 1472 | 29.9 |
2000–2003 | 1321 | 26.8 |
2004–2008 | 1123 | 22.8 |